Annual report pursuant to Section 13 and 15(d)

Stock Compensation (Narrative) (Details)

v3.20.1
Stock Compensation (Narrative) (Details) - USD ($)
1 Months Ended 12 Months Ended 108 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2017
May 19, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of options outstanding   1,130,472 1,380,492 1,130,472 1,172,659  
Unrecognized compensation expense related to stock options   $ 61,000   $ 61,000    
Aggregate intrinsic value of options outstanding   1,178,000   $ 1,178,000    
Intrinsic value of all options exercised   380,000 $ 0      
Share based compensation expense before income taxes   413,000 191,000      
Share based compensation expense after income taxes   326,000 151,000      
Excess tax benefits from exercise of stock options   $ 0 $ 0      
Shares of ESOP allocated to accounts of eligible employees   786,026   786,026    
2011 Executive Incentive Compensation Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of awards authorized           2,500,000
Number of options granted   100,769        
Award expiration period   7 years        
Shares issued under Plan   365,080   365,080    
Number of options outstanding   1,433,699   1,433,699    
Awards eligible for grant   701,221   701,221    
2011 Executive Incentive Compensation Plan [Member] | Share-based Payment Arrangement, Tranche One [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting percentage   25.00%        
ESOP [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period   6 years        
Initial award vesting period   2 years        
Requisite service period   1 year        
ESOP [Member] | Share-based Payment Arrangement, Tranche One [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting percentage   20.00%        
2019 ESOP [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
ESOP contributions   $ 407,584        
2019 ESOP [Member] | Subsequent Event [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Issuance of common stock to Employee Stock Ownership Plan, Shares 66,059          
2018 ESOP [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
ESOP contributions   $ 256,462        
Issuance of common stock to Employee Stock Ownership Plan, Shares   126,336        
Stock Option Plan For Directors [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of options outstanding   18,000   18,000    
Non-Employee Directors [Member] | Stock Option Plan For Directors [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of options granted       0    
Award expiration period   10 years        
Number of shares automatically granted to each non-employee director   3,000        
Employee Stock Option [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Recognition period for unrecognized compensation expense   1 year 10 months 24 days        
Performance Units [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation expense for awards   $ 266,000   $ 266,000    
Recognition period for unrecognized compensation expense   2 years        
Employee Stock Purchase Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Percentage of price of common stock at which employees are able to acquire   85.00%        
Awards eligible for grant   89,122   89,122    
Restricted Stock Units (RSUs) [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation expense for awards   $ 0   $ 0    
2019 to 2020 [Member] | Performance Units [Member] | 2011 Executive Incentive Compensation Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Deferred stock awards granted   157,907